Product Story A New Addition To The Running System (Rs) Family, The Rs 3.0 Pays Homage To The Disruptive Aesthetics Of The Rs Technology And Features A Pod Design On The Midsole With A More Modern, Clean Interpretation Of The Upper. This Version Has A Synthetic Base With A Textile Vamp And Suede Overlays. Details Synthetic Base And Upper Textile Vamp Base And Tongue Suede Eyestay, Vamp And Heel Cap Rs Midsole Rubber Outsole.